The :ref:`CrateDB Admin UI <index>` comes with a cluster browser that allows you to inspect all of the nodes that are in your cluster.
Table of contents
Here's what a single node cluster looks like:
In this example, there is one node named Monte Civetta. When selected from the left-hand sub-navigation menu, information about a node is displayed.
The cluster browser features:
- Node listing:
- The list of nodes gives basic summary information for each node: node name,
hostname, CrateDB version, and a visual icon indicating whether the node is a
master nodeor not and the node :ref:`data status <index-status-bar>` health check. - Node list ordering:
- The list of nodes can be ordered by name or node health.
- Detailed node information:
- Selecting a node from the node list will display details about that particular node.
The following subsections explain the detailed node information.
- Name:
The name of the node.
CrateDB automatically names unnamed nodes.
- Hostname:
- The hostname of the node.
- CrateDB Version:
The version of CrateDB the node is running.
This is important information when performing a rolling upgrade.
- HTTP endpoint:
- The URL of the node's HTTP endpoint.
- CPU Usage:
- A visual indicator of system CPU utilization.
- Heap Usage:
- A visual indicator of allocated Java Virtual Machine (JVM) heap utilization.
- Disk Usage:
- A visual indicator of system disk space utilization.
- CrateDB CPU Usage:
- A visual indicator of the CrateDB process CPU utilization.
- 1min:
- Average load over one minute.
- 5min:
- Average load over five minutes.
- 15min:
- Average load over fifteen minutes.
- Cores:
- The number of CPU cores.
- Initializing:
- The number of :ref:`shards <shards-browser>` currently being initialized.
- Started:
- The number of started shards.
- Reallocating:
- The number of shards that are being moved to another node.
- Post Recovery:
- The number of shards that have been recovered but have not yet been started.
- Read:
Total size of reads on the disk in bytes.
This value is deprecated.
- Write:
Total size of writes on the disk in bytes.
This value is deprecated.
- Reads:
- Number of reads on the disk.
- Writes:
- Number of writes on the disk.